I can name a few.
Dancing - I think you would just need experience and lots of time on your hands, in order to fully dedicate yourself.
Singing - Again, alot of time on your hands, and a ton of experience, you could try choir, that's what I did.
Any form of drawing, painting, etc. - Even being a manga artist or a cartoon artist is a form of art. You would obviously just need practice and skill in drawing.
Design - It takes skill and creativity to be into design because you need a creative mind in order to draw in customers and to create unique designs, and skill to properly advertise, handle financial savings etc.
